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Johnny Hedlund, CEO
FTTH history since 2001 Focus on FTTH with innovative
products to facilitate service rich networks.
Open Access and Vertical customers >1 million ports deployed
Access switches with market leading service QoS features and tools for network operations.
HQ in Sweden, EBITDA positive.
2013-02-19 Technical Challenges in Open Access
Part 1: Technical challenges on a design level Network architecture variants, how it influences service
functionality and end users Part 2: Technical challenges on an operational level
Multicast TV with multiple content providers Troubleshooting in Open Access networks
2013-02-19 Technical Challenges in Open Access
Multiple fibers, multiple service providers (one per fiber) One fiber, one service provider (out of many) delivers all
services. One fiber, one service provider (out of many) delivers all
services, except TV (multicast VLAN) One fiber, managed multiport CPE. Multiple service
providers, one per CPE port possible. One fiber, multiple service providers on any CPE port
(Free seating)
Better for SP
Better for NO/User
2013-02-19 Technical Challenges in Open Access
Where is the demarcation point per service? How networking skilled does the user need to be? One service per port Free seating
TV Phone Internet
Bedroom 1 X X X
Bedroom 2 X X
Living room X X X
Kitchen X
Add to this WiFi for smartphone, laptop,
surf pad Wire for blueray, TV, game
console etc. 2013-02-19 Technical Challenges in Open Access
Three main topology types
Metro network
SP 1 SP 1 SP 2
Service VLAN 100 Service VLAN
200
Metro network
SP 1 SP 1 SP 2 SP 2
SP 3 SP 3
SP 1 SP 2
SP 3
SP 1 SP 2
SP 3
Metro network
Service Router + Customer VLAN
Service VLAN L3 routed
2013-02-19 Technical Challenges in Open Access
Service Router + C-VLAN Service VLAN Layer 3 routed
• Multicast distribution • VLAN scalability • Non-optimal traffic pattern • Run SR / hand-over to SP? • Central service control • Poor QoS in access
network – security concern!
• # of customers per VLAN • IPv6 security and useability • Proprietary security
solution. • Ingress policing, limited
shaping • Many boxes to configure
• Separating service providers
• IPv4 routing topology • Proprietary IPv4
preservation solution • Many boxes to configure
• Good QoS at SR • Fewer boxes to configure*
• Maximize use of IPv4 • Better QoS control at
queue point.
• Free seating • Natural topology for IPv6 • Easier troubleshooting • Better QoS control at
queue point.
Table of headaches
*) if you ignore the security concern 2013-02-19 Technical Challenges in Open Access
TV service providers – coordinate multicast group addresses! Avoid same group different channel problems Allows fewer multicast VLANs and works better with the hardware
Quality control – debugging of TV services
CanalDigital
Viasat
239.1.1.1
239.1.1.1 239.2.1.1
2013-02-19 Technical Challenges in Open Access
Users will have problems. Who do they call? How will the SP be able to
troubleshoot the service? ▪ Does the connection through the OA
network work? ▪ Does the port have the correct service/
VLAN configuration? ▪ Does the port have link to the user
home? ▪ Does the user have link in the home? ▪ Does the user device get an IP
address?
User
Service provider
Network operator
2013-02-19 Technical Challenges in Open Access
Open Access brings another layer of challenges on top of the ”usual” issues facing any FTTH deployment.
Most topologies and solutions have been tried Non-competiveness between OA networks mean there is
openness and willingness to share and exchange ideas.
Take advantage of the Scandinavian ”tree shake” – there is a lot of experience available to guide you!
2013-02-19 Technical Challenges in Open Access
More information: www.packetfront.net Thank you!